How do I change directory permissions?

To change directory permissions in a Unix-like operating system, you can use the chmod command. Here’s how it works:

Basic Syntax:

chmod [options] mode directory_name

Common Modes:

• Numeric Mode: Use numbers to set permissions.
  • 7: Read, write, and execute (rwx)
  • 6: Read and write (rw-)
  • 5: Read and execute (r-x)
  • 4: Read only (r--)
  • 3: Write and execute (wx-)
  • 2: Write only (w--)
  • 1: Execute only (x--)
  • 0: No permissions (---)

Example:

To set the permissions of a directory named mydir to read, write, and execute for the owner, and read and execute for the group and others, you would use:

chmod 755 mydir

Symbolic Mode:

You can also use symbolic notation:

• u: User (owner)
• g: Group
• o: Others
• a: All (user, group, others)

To add execute permission for the group:

chmod g+x mydir

Recursively Change Permissions:

To change permissions for a directory and all its contents, use the -R option:

chmod -R 755 mydir

Feel free to ask if you need more details or examples!